Concrete-mixing apparatus.



PATEL TED JUIEE 16, 1908.

P. G. HAINS, SE. GUNGRET E MIXING APPARATUS.

APPLIGATIOIF FILED MAR. 31, 1908.

2 SHEBTS-3HEET l.

172 yen/Z 07: 2e? 6. Haz ng, 6?.

MZinesses PETER O. HAINS, SR., OF WASHINGTON, DISTRICT OF COLUMBIA.

CONCRETE-MIXING APPARATIJS.

Application filed March 31, 1908. Serial is. 424,322.

' I T all whom it may concern:

Be it known that 1, PETER C. Hams, Sr., a citizen of the United States,residing at Washington, District of Columbia, have invented anImprovement in Concrete-Mixing Apparatus, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like letters on the drawings representing like parts. I

The invention to be hereinafter described relates to concrete mixing andhandling ap paratus, whereby the constituent elements composing themixture may be brought into proper relation and the product deposited inthe desired location, the present invention being a further developmentof the device disclosed in Patent No. 818,929, dated April 24, 1906, towhich reference may be had.

In the patent referred to, a series of substantially conical hopperswere connected together in such manner that they could be nested onewithin the other or successively raised from such nested relation, eachof the upper hoppers being provided with a door hung upon arms andoperated by a connection to the next lower hopper to open said door asthe hopper was raised from the one below it.

The present invention aims to simplify the door constructionparticularly with reference to its opening and closing movements, and inother respects to modify the apparatus of said patent, all as willhereinafter more fully appear.

In the drawings: Figure 1 is a side elevation of the apparatus showingthe series of hoppers raised successively from their nested position andthe material passing into the lower hopper; Fig. 2 is a partialsectionand side elevation, of the hoppers illustrating their relation innested position, the top hopper of the series being charged with thematerials to be mixed: Fig. 3 is a bottom view of the lower hopper,showing the door mounting thereof; Fig. 4 is a sectional detailrepresenting the-relation of the walls of the hoppers and the dooroperating fins, the fin of the upper door resting on the top of thelower door; and Fig. 5 is a bottoin view of one of the doors of an upperhopper and its connection with thelugs of the door ring or flange.

Referring to Fig. 1, which shows one embodiment of the presentinvention, A, A, A

Specification of Letters Patent.

and A represent a series of ho pers or fejcptacles of any desired or preerred forni'or Patented .l'ime 16,1908.

number adapted to be nested togetherfasjin dicated in Fig. 2.Preferably, these he" pers or receptacles are of general conical siape;and each has a bottom opening a, through which the materials to be mixedmay pass. as

will hereinafter ap ear.

The receptacle 1 may be termed the top hopper is preferably providedwith an upwardly extended flange or ring portion a to give additionalstrength and increase its capacity. To the top hoppenA is connected anyusual or dewhich for identificationv sired form of lifting bail or slingb to which at b may be connected the derrick-lift b These parts areappropriately constructed to support the weight not only of the tophopper and contained material, as shown in Fig. '2. but of allthehoppers, as will appear.

As in the patent referre 'to, the several ho pers of the series are'connected together, t e con necting element in the present form of theinvention being shown as chains 0, secured to the top hopper at suitablepoints, as c, and provided at intervals of t eir length with rings 0which engage pins or studs secured to the lower hoppers A and A and havetheir lower ends secured to the bottom hopper, as will be explained.

Each of the upper ho pers A, A, and A is preferably provided wit 1 anangle iron or rib extending along its outer surface, as shown,

said angle iron or rib being secured to its" hopper by a series ofrivets or bolts d.

Exterior to the bottom opening a of each' of the hoppers there issecured a member '6,"

which, for identification, may be known .as"

the bottom ring.

This ring e may be formed of any suitable material, preferablycastmetal; and is secured about t which on the inner surface of thehopper, are

countersunk, as shown, to present a'snilioth V ewing :Fig; "4." it

e outer surface I of the hopper adjacent the opening (thy su'1t-" ablebolts or rivets e, Flg. 4, the "heads of bottom of the hopper. From thisconstruc l tion, it will be noted that the lower circular edge e of thebottomring thus presents'e sharp edge for the bottom door, as will nowiecting from it the lugs e whic be: explained. The bottom I ring serveas a tinge supporjtyfor the bottom door.

. The bottom door of each of the upper hoppers consists oftwb'semi-citrcrilar parts, a bottom view of one of which .is shown inBig. 5. Azhalfdoor, as. indicated in Fig. 5, con-' sir of a door plate fwhich is somewhat lar er than. the bottom opening of the hopper formedby the circular edge e of the bottom ring, so that the door plate f willextend over and form a close joint with the edge of-the up or ring, asillustrated by the dotted and ful lines in Fig. 5'.

Theunder surface of each of the semi-circular plates or. doors f hassecured thereto an angle iron f said angle iron preferably being of thedouble flanged type and its brid ing wall being secured to the bottom ofthe oor late f by suitable rivets or bolts f Fig; 5.

'buitably secured by bolts or rivets. f to the downwardly extendingportions of'the angle iron f, are the door operating members 9.

These door operating members g preferably 125 consist of flat plates,one being secured to each of the downturnedflanges of the an le iron fand having upwardly andbackwar'dly extending portions g which serve asone member of. a hinged joint connecting the *tal, the pur ose beingthat when the hoppers doors to the bottom ring.- As oneforin of suchhinged connection, and as shown 'in Figs. '4; and 5, a suitable rivet orbolt 9 passes through suitable holes formed in the proj ecting portions9 of the door operating mem 35 bers and-similar holes in. the rojectinglugs .e of the bottom ring, all as est shown. in Figs. 4. and 5.

The door operating members 9 have their .outer edges .9 curved, as shownin Fig. 4,

andltheir lower edges substantially horizoncome toget er in nestingposition, the 1nclined' or. curved portion 9 the door operating members9 will first contact with the v inclined surface or inner wall of thenext lower hopper, thereby causing the doors to be turned on theirhinges into closing position. When in closing position, as indicated inFig. 4, the door operating members g rest by their inclined in an upwarddirection, so thatthis in clined edge or wall of the door closingmember, coming in contact with the inclined interior surface of itsother next lower hopper as the hpippers are nested, will assist in bringlng tl e '0 e has pro- -1S secured, said link h forming or into closingposition and main-- tam t' in such pcsition, and as the hoppers aresuccessively arranged one from the. other by the derrick-lift and theco'nnectin the inclined wall g will ride along the lower edge of thenext adjacent hopper beneath to effect a gradualo [string of thedoors'as the hoppers are move to their full separated position, asdefined by the connectin chains 0.

It will be obvious to-those skil ed in the art, of course, that the dooroperating members g, while of the preferred character hereinbeforedescribed, may, nevertheless, be changed either in form or generalcharacter of construction, or maybe secured to the bottom of theirrespective doors by means other than that herein specifically set forthin this special-embodiment of the invention, the essentials being thatthese door operating members will serve to automatically close the doorsof the free hop ers asthey are brought together into neste osition, andwill rest upon a support beneat such as the top of the door of the nextlower hopper, against the inclined surface of the hopper itself, and asthe hoppers are raised from nested position, will ra'dually allow thedoors" to open automatica ly, such automatic operation being effectedwithout special operating devices, as heretofore used.

The lower hopper A is preferably provided with three sup ort-ing membersor legs h, which may be of any usual construction, but which are hereinshown as formed of metal straps having a vertical portion terminating atits upper end in an eye, to which a link h the connection for the lowerend of-the chains 0 with the lower hopper, indicated in Fig. 1. These 0chains legs or suppprting members it are also bent to" provide a bearingportion it against the outer surface of the lower hopper, and a bracingportion [t connecting the said portion h with the lower or supportingportion of the-leg, all

as indicated in F'ig. 1.

Secured to one of thesupportin legs h is a plate 71 extendingtransversely tliereof, to which is pivotally connected at i handles oroperating'members i for the doors is of the lower hopper. The doors isof'the lower hopper are of substantially the same shape and contour asthe doors f of the upper hoppers but instead of swinging upon pivotalconnections as do the doors of the upper hoppers,

the doors 7c of the lower hopper rest upon one of the handles oroperating members i", hereinbefore described, In order to sup ort thesedoorsin their closingposition an to relieve the hinged COIIIIGCUOILSWI',of the handles oroperating members 17, of undue strain, the dooroperating endsofthe handles 11 restupon' a transverse supporting memberP, the ends of which are securedat it t0:.tl1e legs h of the lowerhoppers. From; the COD.-

struction described, it will be noted that the lower doors can be movedfrom their closed position, as shown by full lines in Fi 3; to theiropen position, shown by dotted ines of one of the doors, by merelymoving its operating handle i The top hopper is adapted toseatwithin itand have seated over its bottom opening a preliminary mixer mwhich is ormay be substantially as shown and described in the patent hereinbeforereferred to, and needs no further description here. I In operating thisdevice, the hoppers are} first brought together and nested, as indicatedin Fig. 2, the flanges d of the upper hoppers respectively resting u onthe similar surface of the next adjacent ower hopper, to therebyproperly support and position the hoppers with respect to each other. Inthis position, as already noted, the door operate mg members 9 will haveclosed the doors of the up er hoppers and will hold them closed 20prefer-til) the next adjacent lower door. The doors of the lower hopperwill have been closed by their operating handles and the preliminarymixing device m Will be seated as indicated in Fig. 2. With the hop ersin this position, the desired quantity oi cement is first placed in theupper hopper, over this is then placed the requisite quantity of sand p,and upon this is scattered the desired quantity of cracked stone Q, asuitable amount of water being then properly scattered over the entiretop surface of the stone. The derrick-hoist b is then raised which firstlifts the preliminary mixing device m from its seat and drags it upthrough the materials from position shown in Fig. 2 to that shown inFig. 1. The derrick-hoist I) being then straightened out taut, the tophoppin 'fi' is iirst raisin, and as it leaves the next adjacent lowerhopper, the door operating members 9 will ride over the top surface ofthe door of the lower hopper and along? the lower portion of the bottomopening of? said next lower hopper, thereby permitting; the contents ofthe upper hopper connectingj chains 0 continueto rise, the hopper Awill! he lifted with the result that its doors will ,be gradually openedand the con-- tents receijved by it-from the top hopper be allowedtojfall into the next adjacent lower hopper. his action of thesuccessive hoppers will cpntinue until the bottom hop or is reached, atwhich time the materialwilliave been thoroughly mixed and the boom ofthe derrick, if used, can swing the entire mixing ,device into positionwhere the concrete is to .ib'e used, whereupon the door operatinghanfdles t of, the lower hopper can be opened any 5 amount desired andthe material be allowed. to fall to place. I I claim:

1. In a concrete mixing and handling aparatus, the combination of aplurality of iioppers having bottom openings and adaptly by resting uponthe top surface of to fall intiij the next lower hopper. As the ed to benested one within the other, means for connecting the stud hoppers inseries to permit them to be success vely raised from their nestedposition, doors for the bottom. openings ot said hoppers, and meanscarried by and projecting from the doors of the up; per hoppers forcontacting with a part pertaining to the hopper beneath for closing saiddoors as the hoppers are nested together.

2. In a. concrete mixing and handling apparatus, the combination of aplurality of fins secured to the doors of the upper hoppers for engaginga part of the next lower hopper, and serving to close said doors as thehoppers are nested together.

3. In a concrete mixing and handling apparatus, the combination of aplurality of hoppers having bottom openings and adapted to be nested onewithin the other, means for connecting said hoppers in series to permit/them to be successively raised from their nested position, doors hingedto one side of the bottom openings of the upper hoppers, and dooroperating fins secured to said doors for engaging a part of the nextlower hopper and serving to close said doors as the hoppers are nestedtogether.

In a concrete mixing and handling apparatus, the combination of aplurality of hoppers having bottom openings and adapted n sted oneWithin the other, means for connecting said hoppers in series to permitthem be successively raised from their nested position, a bottom ringsecured about the bottom opening of each of said hoppers, and a bottomclosing door hinged to each of the rings of-the upper hoppers, and meansto close said doors as the hoppers are nested.

In a concrete mixing and handling ap para-tits, the combination of aplurality of hoppers having bottom openings and adapted to be nested onewithin the other, means for connecting said hoppers in series to permitthem to be successively raised from their nested position, swingingdoors for closing the bottom openings .of theupper hoppers, said. doorsbeing adapted to open automatii ally as the hoppers are successivelyraised, and door operating fins secured to the bottom of each of saiddoors to close the same when the hoppers are nested.

6. In aconcrete mixing and. handling apparatus, the combination of aplurality of hoppers having bottom openings and adapted to be nested onewithin the other, means for connecting the said hoppers in series topermit their; to besuccessively raiser. from their nested position,doors for closing the 4 Y soccer bottom 0 enings of said hoppers, andangle 1 name to'this specification, in the presence of irons or angessecured to the outer surface two subscribing Witnesses. of each of theupper hoppers to contact with W the interior of the hopper beneath tosup- BLER 5 port the upper hoppers when they are nest Witnesses:

ed together. EDWARD H. JONES, 1 In testimony whereof, I have si med myCLARENCE Rt Dix.

